Facing difficulty in fucntional coverage using NCSim

Hi All, I am facing some difficulty in implementing the functional coverage using NCSim. I have 2 coverpoints of 3 bins each and one cross of one bin. cp_m: coverpoint m { bins m1; bins m2; bins m3; } cp_w: coverpoint w { bins w1; bins w2; bins w3; } crs : cross cp_m, cp_w { option.cross_auto_bin_max = 0; bins bin1 = binsof (cp_m.m1) && binsof (cp_w.w1) ; } I want the above fuctionality, i.e ., crs sholud contain only m1w1 bin and rest of the bins should be ignored. but the problem by using the NCsim is, bins and cross_auto_bins_max inside cross are not supported. can somebody tell me how to achieve the same without using bins and cross_auto_bin_max in the cross. I tried this way, by using ignore_bins inside cross, since !(A && B) = (!A) || (!B) crs: cross cp_m, cp_w { ignore_bins ign_bins = (!binsof(cp_m.m1)) || (!binsof(cp_w.w1)) ; } But, it is not working. please help me in this regard....